sudo cp vexpress-v2p-ca9/arch/arm/boot/dts/vexpress-v2p-ca9.dtb /sync/tftp/
sudo cp vexpress-v2p-ca9/arch/arm/boot/uImage /sync/tftp/
#sudo rm -rf /sync/rootfs/*
sudo cp -rf rootfs-arm/* /sync/rootfs
sudo chmod -R 777 /sync/rootfs
